__init__.py 文件源码

def __figure_out_task_attribute_and_operator(criteria):
        swap_operands = False

        if '__' in criteria:
            attribute, op = criteria.split('__')
            op = get_operator_function(op)
        else:
            attribute, op = criteria, operator.eq

        if not hasattr(Task, attribute):
            if hasattr(Task, attribute + 's'):
                op = operator.contains
                attribute += 's'
            else:
                raise RuntimeError("Task doesn't have such attribute.")
        elif op is operator.contains:
            swap_operands = True

        return attribute, op, swap_operands